402 lines
15 KiB
C++
402 lines
15 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#ifndef OSGVIEWER_VIEWEREVENTHANDLERS
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#define OSGVIEWER_VIEWEREVENTHANDLERS 1
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#include <osg/AnimationPath>
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#include <osgText/Text>
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#include <osgGA/GUIEventHandler>
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#include <osgGA/AnimationPathManipulator>
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#include <osgViewer/GraphicsWindow>
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#include <osgViewer/Viewer>
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#include <osgDB/fstream>
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namespace osgViewer {
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/** Event handler for adding on screen help to Viewers.*/
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class OSGVIEWER_EXPORT HelpHandler : public osgGA::GUIEventHandler
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{
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public:
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HelpHandler(osg::ApplicationUsage* au=0);
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void setApplicationUsage(osg::ApplicationUsage* au) { _applicationUsage = au; }
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osg::ApplicationUsage* getApplicationUsage() { return _applicationUsage.get(); }
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const osg::ApplicationUsage* getApplicationUsage() const { return _applicationUsage.get(); }
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void setKeyEventTogglesOnScreenHelp(int key) { _keyEventTogglesOnScreenHelp = key; }
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int getKeyEventTogglesOnScreenHelp() const { return _keyEventTogglesOnScreenHelp; }
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void reset();
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osg::Camera* getCamera() { return _camera.get(); }
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const osg::Camera* getCamera() const { return _camera.get(); }
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bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa);
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/** Get the keyboard and mouse usage of this manipulator.*/
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virtual void getUsage(osg::ApplicationUsage& usage) const;
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protected:
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void setUpHUDCamera(osgViewer::ViewerBase* viewer);
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void setUpScene(osgViewer::ViewerBase* viewer);
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osg::ref_ptr<osg::ApplicationUsage> _applicationUsage;
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int _keyEventTogglesOnScreenHelp;
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bool _helpEnabled;
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bool _initialized;
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osg::ref_ptr<osg::Camera> _camera;
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osg::ref_ptr<osg::Switch> _switch;
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};
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/** Event handler for adding on screen stats reporting to Viewers.*/
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class OSGVIEWER_EXPORT StatsHandler : public osgGA::GUIEventHandler
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{
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public:
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StatsHandler();
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enum StatsType
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{
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NO_STATS = 0,
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FRAME_RATE = 1,
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VIEWER_STATS = 2,
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CAMERA_SCENE_STATS = 3,
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VIEWER_SCENE_STATS = 4,
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LAST = 5
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};
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void setKeyEventTogglesOnScreenStats(int key) { _keyEventTogglesOnScreenStats = key; }
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int getKeyEventTogglesOnScreenStats() const { return _keyEventTogglesOnScreenStats; }
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void setKeyEventPrintsOutStats(int key) { _keyEventPrintsOutStats = key; }
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int getKeyEventPrintsOutStats() const { return _keyEventPrintsOutStats; }
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double getBlockMultiplier() const { return _blockMultiplier; }
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void reset();
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osg::Camera* getCamera() { return _camera.get(); }
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const osg::Camera* getCamera() const { return _camera.get(); }
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virtual bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa);
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/** Get the keyboard and mouse usage of this manipulator.*/
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virtual void getUsage(osg::ApplicationUsage& usage) const;
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protected:
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void setUpHUDCamera(osgViewer::ViewerBase* viewer);
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osg::Geometry* createBackgroundRectangle(const osg::Vec3& pos, const float width, const float height, osg::Vec4& color);
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osg::Geometry* createGeometry(const osg::Vec3& pos, float height, const osg::Vec4& colour, unsigned int numBlocks);
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osg::Geometry* createFrameMarkers(const osg::Vec3& pos, float height, const osg::Vec4& colour, unsigned int numBlocks);
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osg::Geometry* createTick(const osg::Vec3& pos, float height, const osg::Vec4& colour, unsigned int numTicks);
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osg::Node* createCameraTimeStats(const std::string& font, osg::Vec3& pos, float startBlocks, bool acquireGPUStats, float characterSize, osg::Stats* viewerStats, osg::Camera* camera);
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void setUpScene(osgViewer::ViewerBase* viewer);
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void updateThreadingModelText();
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int _keyEventTogglesOnScreenStats;
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int _keyEventPrintsOutStats;
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int _statsType;
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bool _initialized;
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osg::ref_ptr<osg::Camera> _camera;
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osg::ref_ptr<osg::Switch> _switch;
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ViewerBase::ThreadingModel _threadingModel;
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osg::ref_ptr<osgText::Text> _threadingModelText;
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unsigned int _frameRateChildNum;
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unsigned int _viewerChildNum;
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unsigned int _cameraSceneChildNum;
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unsigned int _viewerSceneChildNum;
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unsigned int _numBlocks;
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double _blockMultiplier;
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};
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/** Event handler allowing to change the screen resolution (in windowed mode) and toggle between fullscreen and windowed mode. */
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class OSGVIEWER_EXPORT WindowSizeHandler : public osgGA::GUIEventHandler
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{
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public:
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WindowSizeHandler();
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/** Get the keyboard and mouse usage of this manipulator.*/
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virtual void getUsage(osg::ApplicationUsage &usage) const;
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void setKeyEventToggleFullscreen(int key) { _keyEventToggleFullscreen = key; }
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int getKeyEventToggleFullscreen() const { return _keyEventToggleFullscreen; }
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void setToggleFullscreen(bool flag) { _toggleFullscreen = flag; }
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bool getToggleFullscreen() const { return _toggleFullscreen; }
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void setKeyEventWindowedResolutionUp(int key) { _keyEventWindowedResolutionUp = key; }
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int getKeyEventWindowedResolutionUp() const { return _keyEventWindowedResolutionUp; }
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void setKeyEventWindowedResolutionDown(int key) { _keyEventWindowedResolutionDown = key; }
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int getKeyEventWindowedResolutionDown() const { return _keyEventWindowedResolutionUp; }
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void setChangeWindowedResolution(bool flag) { _changeWindowedResolution = flag; }
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bool getChangeWindowedResolution() const { return _changeWindowedResolution; }
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virtual bool handle(const osgGA::GUIEventAdapter &ea, osgGA::GUIActionAdapter &aa);
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protected:
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void toggleFullscreen(osgViewer::GraphicsWindow *window);
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void changeWindowedResolution(osgViewer::GraphicsWindow *window, bool increase);
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unsigned int getNearestResolution(int screenWidth, int screenHeight, int width, int height) const;
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int _keyEventToggleFullscreen;
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bool _toggleFullscreen;
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int _keyEventWindowedResolutionUp;
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int _keyEventWindowedResolutionDown;
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bool _changeWindowedResolution;
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std::vector<osg::Vec2> _resolutionList;
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int _currentResolutionIndex;
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};
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/** Event handler allowing to change the viewer threading model */
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class OSGVIEWER_EXPORT ThreadingHandler : public osgGA::GUIEventHandler
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{
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public:
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ThreadingHandler();
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/** Get the keyboard and mouse usage of this manipulator.*/
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virtual void getUsage(osg::ApplicationUsage &usage) const;
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void setKeyEventChangeThreadingModel(int key) { _keyEventChangeThreadingModel = key; }
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int getKeyEventChangeThreadingModel() const { return _keyEventChangeThreadingModel; }
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void setChangeThreadingModel(bool flag) { _changeThreadingModel = flag; }
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bool getChangeThreadingModel() const { return _changeThreadingModel; }
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void setKeyEventChangeEndBarrierPosition(int key) { _keyEventChangeEndBarrierPosition = key; }
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int getKeyEventChangeEndBarrierPosition() const { return _keyEventChangeEndBarrierPosition; }
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void setChangeEndBarrierPosition(bool flag) { _changeEndBarrierPosition = flag; }
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bool getChangeEndBarrierPosition() const { return _changeEndBarrierPosition; }
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bool handle(const osgGA::GUIEventAdapter &ea, osgGA::GUIActionAdapter &aa);
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protected:
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int _keyEventChangeThreadingModel;
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bool _changeThreadingModel;
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int _keyEventChangeEndBarrierPosition;
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bool _changeEndBarrierPosition;
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osg::Timer_t _tickOrLastKeyPress;
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bool _done;
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};
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/**
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* Event handler allowing the user to record the animation "path" of a camera. In it's current
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* implementation, this handler cannot guarantee the final view matrix is correct; it is
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* conceivable that the matrix may be one frame off. Eh--not a big deal! :)
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* TODO: Write the file as we go, not when it's all done.
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* TODO: Create an osgviewer on-screen indication that animation is taking place.
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*/
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class OSGVIEWER_EXPORT RecordCameraPathHandler : public osgGA::GUIEventHandler
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{
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public:
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RecordCameraPathHandler(const std::string &filename = "saved_animation.path", float fps = 25.0f);
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void setKeyEventToggleRecord(int key) { _keyEventToggleRecord = key; }
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int getKeyEventToggleRecord() const { return _keyEventToggleRecord; }
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void setKeyEventTogglePlayback(int key) { _keyEventTogglePlayback = key; }
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int getKeyEventTogglePlayback() const { return _keyEventTogglePlayback; }
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void setAutoIncrementFilename( bool autoinc = true ) { _autoinc = autoinc?0:-1; }
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virtual void getUsage(osg::ApplicationUsage &usage) const;
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bool handle(const osgGA::GUIEventAdapter &ea, osgGA::GUIActionAdapter &aa);
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protected:
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std::string _filename;
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int _autoinc;
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osgDB::ofstream _fout;
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int _keyEventToggleRecord;
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int _keyEventTogglePlayback;
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bool _currentlyRecording;
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bool _currentlyPlaying;
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double _interval;
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double _delta;
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osg::Timer_t _animStartTime;
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osg::Timer_t _lastFrameTime;
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osg::ref_ptr<osg::AnimationPath> _animPath;
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osg::ref_ptr<osgGA::AnimationPathManipulator> _animPathManipulator;
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osg::ref_ptr<osgGA::MatrixManipulator> _oldManipulator;
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};
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/** Event handler for increase/decreasing LODScale.*/
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class OSGVIEWER_EXPORT LODScaleHandler : public osgGA::GUIEventHandler
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{
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public:
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LODScaleHandler();
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void setKeyEventIncreaseLODScale(int key) { _keyEventIncreaseLODScale = key; }
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int getKeyEventIncreaseLODScale() const { return _keyEventIncreaseLODScale; }
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void setKeyEventDecreaseLODScale(int key) { _keyEventDecreaseLODScale = key; }
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int getKeyEventDecreaseLODScale() const { return _keyEventDecreaseLODScale; }
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bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa);
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/** Get the keyboard and mouse usage of this manipulator.*/
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virtual void getUsage(osg::ApplicationUsage& usage) const;
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protected:
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int _keyEventIncreaseLODScale;
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int _keyEventDecreaseLODScale;
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};
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/** Event handler that will capture the screen on key press. */
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class OSGVIEWER_EXPORT ScreenCaptureHandler : public osgGA::GUIEventHandler
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{
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public:
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/** Abstract base class for what to do when a screen capture happens. */
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class CaptureOperation : public osg::Referenced
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{
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public:
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virtual void operator()(const osg::Image& image, const unsigned int context_id) = 0;
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};
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/** Concrete implementation of a CaptureOperation that writes the screen capture to a file. */
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class OSGVIEWER_EXPORT WriteToFile : public CaptureOperation
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{
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public:
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enum SavePolicy
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{
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OVERWRITE,
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SEQUENTIAL_NUMBER
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// ... any others?
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};
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WriteToFile(const std::string& filename, const std::string& extension, SavePolicy savePolicy = OVERWRITE);
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virtual void operator()(const osg::Image& image, const unsigned int context_id);
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void setSavePolicy(SavePolicy savePolicy) { _savePolicy = savePolicy; }
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SavePolicy getSavePolicy() const { return _savePolicy; }
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protected:
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const std::string _filename;
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const std::string _extension;
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SavePolicy _savePolicy;
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std::vector<unsigned int> _contextSaveCounter;
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};
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ScreenCaptureHandler(CaptureOperation* defaultOperation = 0);
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void setKeyEventTakeScreenShot(int key) { _keyEventTakeScreenShot = key; }
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int getKeyEventTakeScreenShot() const { return _keyEventTakeScreenShot; }
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void setCaptureOperation(CaptureOperation* operation);
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CaptureOperation* getCaptureOperation() const;
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// aa will point to an osgViewer::View, so we will take a screenshot
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// of that view's graphics contexts.
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bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa);
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/** Get the keyboard and mouse usage of this manipulator.*/
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virtual void getUsage(osg::ApplicationUsage& usage) const;
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protected:
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int _keyEventTakeScreenShot;
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// there could be a key to start taking screenshots every new frame
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osg::ref_ptr<CaptureOperation> _operation;
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osg::ref_ptr<osg::Camera::DrawCallback> _callback;
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void addCallbackToViewer(osgViewer::ViewerBase& viewer);
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};
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/** InteractiveImage is an event handler that computes the mouse coordinates in an images coordinate frame
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* and then passes keyboard and mouse events to it. This event handler is useful for vnc or browser
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* surfaces in the 3D scene.*/
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class OSGVIEWER_EXPORT InteractiveImageHandler : public osgGA::GUIEventHandler, public osg::Drawable::CullCallback
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{
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public:
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InteractiveImageHandler(osg::Image* image):
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_image(image) {}
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META_Object(osgViewer, InteractiveImageHandler);
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virtual bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& aa, osg::Object*, osg::NodeVisitor* nv);
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virtual bool cull(osg::NodeVisitor* nv, osg::Drawable* drawable, osg::RenderInfo* renderInfo) const;
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protected:
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virtual ~InteractiveImageHandler() {}
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InteractiveImageHandler() {}
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InteractiveImageHandler(const InteractiveImageHandler& rhs,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY) {}
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bool mousePosition(osgViewer::View* view, osg::NodeVisitor* nv, const osgGA::GUIEventAdapter& ea, int& x, int &y) const;
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osg::observer_ptr<osg::Image> _image;
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bool _handleKeyboardEvents;
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bool _handledOnKeyboardEvents;
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bool _handleMouseEvents;
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bool _handledOnMouseEvents;
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};
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}
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#endif
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